Pump



ApriI S, 1930. J. BRENZINGER PUMP 2 Sheets-Sheet Filed March 50 1926 INLET OUTLET lvwcn to: Mkwjmmzirger LL, (1 l'tou'xc a April 8, 1930. J. BRENZINGER PUMP 1920 2 Sheets-Sheet 2 Filed March 50,

an we 11 to z V Jada; flrezzzuiger' $3M; A @Ho'un e1 Patented Apr. 8, 1930 UNITED STATES PATENT OFFICE JULIUS BRENZINGER, OF FAIRFIELD,

CHEMICAL ENGINEERING CORPORATION,

POBATION OF CONNECTICUT although the invention is not limited to suchuse. The main object and feature of the inp vention is the production of a pump capable of running at high speed without generation of an undue amount of heat, and one moreover that can be readilydisassembled and cleaned and in which adjustments can be made to accurately vary the amount of material fed.

I In theaccompanying drawings the invention is shown in a concrete and preferred form in which: I

I Fig.1= is a top plan view partly broken away and in section of a pump embodying the invention.

Fig. 2 is a front elevation, with parts broken away and in section, looking in the direction of arrow 2 of Fig. 1.

Fig. 3 is a vertical transverse sectional view on the plane of line 3-3 of Fig. 2.-

Figs. 4 and 5 are diagrammatic views showing the relative timing of the parts.

Fig. 6 is a diagrammatic view showing the effect of adjusting the eccentric.

1 indicates a casing of any suitable construction having a pump chamber2;"and 3 indicates a valve chamber intersecting the pump chamber and extending across the same thereby dividing the pump chamber into two portions 4 and 5. 6-and 7 indicate two oppositelyreciprocating pistons, one for each portion of the pump a turnable valve means, in this instance a continuously rotating valve, extending through the valve chamber, across the pump chamber and out through the outboard extension 11 carried by the casing. This valve'makes one revolution to each reciprocation of the pis-" tons. 12 is an inletZand 13 is an outlet communicating with the valve chamber, one on each side of the pump chamber. In line with the inlets and outlets are annular grooves 14 and 15 in said valve, and opposite to each other, on said valve, are two ports, 16 and 17, one extending from the annular groove adjacent the inlet and the other extending from Application mea March so; .1926. Serial No. 98,475.

that is secured by means of pin 21 to the chamber. 10 indicates CONNECTICUT, ASSIGNOR TO THE MAX AIS rum? the other annular groove to the pump chamber.

It will be understood that rotation of the valve alternately connects each portion of the and that the arrangement is such that when the inlet is connected to one portion the outlet is connected to the other portion of the pump chamber. The pistons reciprocate in harmony with this arrangement so that when one portion of the ump chamber is connected to the inlet its piston is moving away from the valve while when the outlet is connected to one portion of the pump chamber its piston is moving toward the valve.

Many different means may of course be used to actuate the pistons and the valve, but, in the present instance, the following expedients are employed: 18 is a slidable .yoke on the exterior of the casing which is rigidly attached to the two pistons. 19 is an eccentric, crank or cam that surrounds the valve and specifically is rotatably mounted on the outboard bearing for the valve. Surrounding this eccentric is a connecting member 120' o e to thereby convert the movement of th: eccentric into a'reciprocating movement for the yoke. 22 is a rotating member such a gear surrounding the valve and outboard bearing being loosely mounted on the concentric surface of the eccentric, and 23 is a transmission member bolted as by means of bolts 24; to the gear and also provided with a setscrew 25 locked to the valve as shown. It will now be understood that rotation imparted to gear 22 causes reciprocation of pistons, 6 and transmission member ump chamber with the inlet and the outlet.

of eccentric 19, sairkgccentric being rotated by friction exerted 23 pressing said eccentric against a on gear 22. mission member 23 by reason of set-screw 25, and the transmission member (23) is rotated by gear 22 by reason of connecting bolts 24.

In Figs. .4 and 5 I have illustrated graphically what takes placeduring the operation of the device.

shoulder Valve "10 is rotated with trans- Fig. 4 shows the parts in the 7 middle position similarly to that shown in Figs. 1, 2 and 3, while in Fig. 5 the parts are shown at the end of a cycle of movements. From this it will be seen that the eccentric is so arranged that the movement of the piston from zero is gradually accelerated, then comes to full speed and is then gradually decelerated. Also that while the eccentric is moving from position A to position B the piston moves the distance B but that Whlltk the eccentric moves from position B to position C the piston moves the distance C which is relatively greater than B. Similarly the port in the valve is gradually exposed being small when the movement of the piston is small and becoming greater as the speed of the cylinder increases.

Suitable means are provided for varying the timing of the reversal of the piston with respect to the timing of the revolution of the valve, this being indicated in Figs. 2, 3 and 6. Bolts 24 connect transmission member 23 to gear 22 and eccentric 19 is driven by friction caused by transmission member 23 when bolts 24 are screwed down tight. It will be apparent that, when bolts 24 are loosened, the friction against eccentric 19 is removed, and that the operator may then, by grasping pin 26, turn said eccentric between outboard extension 11 and connecting member 20 in one direction or the other without affecting the circumferential position of valve 10. After the adjustment is made the bolts 24 are again tightened. In Fig. 6 pin 26 is shown in its middle position and indicated in the two extreme positions by dotted lines, and the opening in member 23 by reason. of which access can be gained to pin 26 is also indicated in dotted lines.

I claim:

1. 'A pump including: a casing, a pump chamber therein, a valve chamber intersect ing the pump chamber and dividing it into ing the valve to drive the rotating valve and the eccentric from the rotating member.

3. A pump including: a casing, a pump I chamber therein, a valve chamber intersecting the pump chamber and dividing it into two portions, an outboard bearing on the casing in line with the valve chamber, a rotating valve in said valve chamber and extending out through the outboard bearing, two oppositely reciprocating pistons one for each portion of the pump chamber, a yoke exteriorly of the casing connecting the two pistons, an eccentric surrounding the outboard bearing, a connecting member between the eccentric and the yoke, a rotating member also surrounding the outboard bearing, and transmission means surrounding the valve beyond the outboard bearing to drive the rotating valve and the eccentric from the rotating member.

4. A pump including: a casing, a pump chamber therein, a valve chamber intersecting the pump chamber and dividing it into two portions, a rotating valve in said valve chamber, two oppositely reciprocating pistons one for each portion of the pump chamber, a yoke connecting the two pistons, an eccentric, a connecting member between the eccentric and the yoke, a. rotating member, and a rotatable transmission member, driven from the rotating member, to drive the eccentric by friction and the valve positively.

Signed at New York, in the county of New York and State of New York, this 29th day of March, 1926.

JULIUS BRENZING'ER.

two portions, a rotating valve in said valve .chamber, two oppositely reciprocating pistons onefor each portion of the pump chamber, a yoke connecting the two pistons, an eccentric, a connecting member between the eccentric and the yoke, a rotating member surrounding a concentric portion of the eccentric, and transmission means surrounding the valve to drive the rotating valve and the eccentric from the rotating member.

2. A pump including: a casing, a pump chamber therein, a valve chamber intersecting the pump chamber and dividing it into two portions, a rotating valve in,said valve chamber and extending outside the casing, two oppositely reciprocating pistons one for each portion of the pump chamber, a yoke exteriorly of the casing connecting the two pistons, an eccentric surrounding the valve, a connecting member between the eccentric and the yoke, a rotating member surrounding the valve, and transmission means also surround- 

